Phospholipids involve a phosphate group and

ATI RN

ATI RN Test Bank

Phospholipids involve a phosphate group and:

A. 4 or more fatty acids B. 3 fatty acids C. 2 fatty acids D. 1 fatty acid

Correct Answer: C

Rationale: Phospholipids have a glycerol, two fatty acids, and a phosphate group, unlike triglycerides with three.

The genetic code for a single amino acid consists of:

A. one nucleotide B. two nucleotides C. three nucleotides D. four nucleotides

Correct Answer: C

Rationale: A codon, specifying one amino acid, is a triplet of three nucleotides.

Simple squamous epithelium is not found in:

A. lymph vessels B. pancreatic duct C. small arterioles D. air sacs of lung

Correct Answer: B

Rationale: Simple squamous lines vessels and alveoli for diffusion; pancreatic ducts have cuboidal/columnar epithelium.

Adipose tissue forms:

A. only during fetal development B. throughout life C. mainly during fetal development and the first postpartum year D. mainly at puberty

Correct Answer: B

Rationale: Adipose tissue can form and expand throughout life based on energy storage needs.

Identify the component of the plasma membrane that marks cells as belonging to a particular individual.

A. proteins B. glycoproteins C. cholesterol D. phospholipids

Correct Answer: B

Rationale: Glycoproteins, with carbohydrate chains, serve as markers for cell identity (e.g., blood type antigens).

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